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Sizing the main and task stacks

Posted by Cem on March 4, 2013
Hi

I am wondering how to correctly size stacks of an application with several tasks running. Is there any relation in between the main stack and the task stacks? How much main stack (defined in the linker) do the tasks use?

Finally, is there any static analysis tool which calculates the worst case stack depth required by the application?

Thanks in advance.
Cem

RE: Sizing the main and task stacks

Posted by Richard on March 4, 2013
See:
http://www.freertos.org/FAQMem.html#RAMAlloc1
http://www.freertos.org/FAQMem.html#StackSize

[I just made a few changes to these pages as they are really old, so refresh if you have viewed them recently to ensure you are not viewing the cached version]

There is no tool to pre-calculate the stack usage, but facilities exist in the kernel to allow you to detect overflows and tune the stack usage.

The state viewer debugger plug-ins will also show you the high water mark use of each task.

Regards.


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